BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, NOVEMBER 24, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
 
NEAR RECORD COLD ACCOMPANIED BY STRONG SUSTAINED WINDS
SINGLE DIGIT DEW POINTS AND WIND CHILLS THROUGHOUT THE DAY
 
Temperatures here at the summit have struggled into the mid-20s after
hovering around the 20F mark for most of the morning. Today’s record low
maximum temperature is 26F, which was exceeded just at the stroke of midnight
when we were still cooling from yesterday and it was 27F. Our daytime
maximum temperature is 25F so far, which is thanks in large part to the
strong sustained winds from the WNW. The average wind speed today is
over 20 MPH, with several gusts reaching 45 MPH (40 kts.) According to our
automated systems, we have reached a negative dew point temperature for the
first time this season.
 
Today's Observations:
 
7 A.M.
Weather: Scattered cumulus and cumulus fractus in the vicinity and distant
all quadrants
Temperature: 20F; Dew Point: 8F; Wind: WNW at 20G29 kts.
Wind: Peak Gust: 29 kts WNW at 6:55 A.M.
Sea-level pressure: 29.86 ins. Hg, increasing then increasing more rapidly
Visibility: 65 miles, light distant haze
6-hr max temp: 26F
6-hr min temp: 19F
BHO SA 1155 40 SCT 65 110/20/8/2920G29/986/ SCT CU/CUFRA DSNT ALQDS
LT DSNT HZ PK WND 2929/55/ 8/100 53009 10026 20019
 
10 A.M. 
Weather: Scattered cumulus and cumulus fractus in the vicinity and distant
all quadrants
Temperature: 21F; Dew Point: 5F; Wind: WNW at 22G32 kts.
Wind: Peak Gust: 32 kts WNW at 9:45 A.M.
Sea-level pressure: 29.91 ins. Hg, increasing then increasing more slowly
Visibility: 70 miles
BHO SA 1455 40 SCT 70 129/21/5/3022G32/991/ SCT CU/CUFRA DSNT ALQDS
PK WND 3034/45/ 8/100 51019
 
1 P.M.
Weather: Clear with few cumulus and cumulus fractus in the vicinity and
distant all quadrants
Temperature: 25F; Dew Point: 4F; Wind: WNW at 24G35 kts,
Wind: Peak Gust: 35 kts WNW at 12:46 P.M.
Sea-level pressure: 29.92 ins. Hg, increasing then increasing more slowly
Visibility: 70 miles
BHO SA 1755 CLR 70 131/25/4/3024G35/992/ FEW CU/CUFRA INVCY AND DSNT ALQDS
PK WND 3035/46/ 8/100 53002 10025 20020
 
WEATHER SUMMARY FOR SATURDAY, NOVEMBER 23, 2013
 
TEMPERATURE (DEGREES F)
MAX.....45    NORMAL.....47
MIN.....26    NORMAL.....31
MEAN....36    NORMAL.....39
 
DEPARTURE FROM 30-YEAR NORMAL......................-3
TOTAL DEPARTURE FOR THE MONTH......................+7 [+0.3 DEGREE/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............29  DEPARTURE.........+3
TOTAL HEATING UNITS FOR THE MONTH.............501  DEPARTURE.........-7
TOTAL HEATING UNITS FOR THE SEASON............978  DEPARTURE........-93
TOTAL HEATING UNITS LAST SEASON TO DATE.......932  DIFFERENCE.......+46
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................40 WNW AT  9:38 P.M.
                   AERO.......................44 WNW AT  9:37 P.M.
                   ASOS.......................42 WNW AT  9:40 P.M.
                   DAVIS......................41 WNW AT  9:38 P.M. RMY 48
FASTEST MILE FOR YESTERDAY....................N/A*
MAXIMUM 2-MINUTE ASOS AVERAGE.................29 WNW AT  9:39 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE................26 WNW AT  9:39 P.M.
AVERAGE WIND SPEED AND DIRECTION.............N/A*
                   ASOS......................16.1
                   DAVIS.....................15.3 WNW [285 Degrees]
*Contact anemometer data missing from 2:00 P.M. 11/23 to 9:00 A.M. 11/24
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE............-0.16
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.23   DEPARTURE............-2.40
                         ASOS..............1.22
TOTAL PRECIPITATION FOR THE YEAR..........44.24   DEPARTURE............-3.16
                         ASOS..............N/A**
** ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M.......0.0     DEPARTURE.............-0.1
TOTAL SNOWFALL FOR THE MONTH.............0.2     DEPARTURE.............-1.0
TOTAL SNOWFALL FOR THE SEASON............0.2     DEPARTURE.............-1.3    
 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2013 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
11/1  68/56/62/+16/0.10/0.0/012/02        60 SSW AERO N/A N/A    RMY 66
11/2  65/49/57/+11/0.00/0.0/296/48        22 WSW AERO N/A N/A    RMY 23
11/3  49/30/40/-6/0.06/T/135/22           23 N   AERO N/A N/A    RMY N/A
11/4  42/27/35/-10/0.00/0.0/588/96        24 NNE AERO N/A N/A    RMY 25
11/5  50/29/40/-5/0.00/0.0/487/80         16 SSW AERO N/A N/A    RMY 17
11/6  59/40/50/+5/0.00/0.0/419/69         30 SSW AERO 31 MPH SSW RMY 33
11/7  65/37/51/+6/0.31/0.0/079/13         33 SW  AERO 37 MPH SW  RMY 37
11/8  48/31/40/-4/T/T/0.0/421/70          37 WNW AERO 37 MPH WNW RMY 39
11/9  44/29/37/-7/0.00/0.0/366/61         25 WNW AERO 25 MPH WNW RMY 29
11/10 52/40/46/+2/0.08/0.0/108/18         31 WNW AERO 33 MPH WNW RMY N/A
11/11 51/36/44/+1/0.00/0.0/500/84         36 WNW AERO 37 MPH WNW RMY 37
11/12 48/24/36/-7/0.11/0.2/000/00         42 SW  AERO 43 MPH SW  RMY 43
11/13 35/21/28/-15/0.00/0.0/591/100       29 NW  AERO 30 MPH NW  RMY 30
11/14 49/26/38/-4/0.00/0.0/536/91         25 SW  AERO 25 MPH SW  RMY 28
11/15 59/38/49/+7/0.00/0.0/393/67         24 S   AERO 25 MPH S   RMY 26
11/16 59/40/50/+8/0.00/0.0/363/62         20 WSW AERO 20 MPH WSW RMY N/A
11/17 59/42/51/+10/0.07/0.0/000/00        23 SSE AERO 25 MPH SSE RMY N/A
11/18 65/46/56/+15/0.28/0.0/400/69        40 SSW AERO 40 MPH S   RMY N/A
11/19 46/28/37/-4/0.00/0.0/428/74         46 WNW AERO 46 MPH WNW RMY 46
11/20 40/25/33/-7/0.00/0.0/.../..         23 NW  AERO 22 MPH NW  RMY 22
11/21 46/26/36/-4/0.00/0.0/.../..         16 SW  AERO 16 MPH SW  RMY N/A
11/22 46/38/42/+2/0.22/0.0/.../..         17 WSW AERO 18 MPH SW  RMY N/A
11/23 45/26/36/-3/0.00/0.0/.../..         40 WNW AERO 44 MPH WNW RMY 48
 
11/24 morning low temp: 19F; the normal low is now 31F
 
DAILY RECORDS FOR NOVEMBER 2013
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 24
HIGH 69 IN 1931
LOW 7 IN 1897
PRECIP 1.76 INCHES IN 1901
SNOWFALL 4.5 INS IN 1936
PEAK GUST 69 SSW IN 1959
 
RECORDS FOR NOVEMBER 25
HIGH 71 IN 1979
LOW 13 IN 1938
PRECIP 3.10 INCHES IN 1983
SNOWFALL 8.0 INS IN 1888
PEAK GUST 94e E IN 1950
 
TODAY'S REPORT PREPARED BY: Forrest Iwanik